Turning tool



Sept. '11, 1923.- 1,467,501

w. F. RoNEY TURNING TOOL Filed March v. 1922 2 sheets-sheet 1 WIM/5885s 'W E R ngi/vien [.[v 'l 0 s W/ 3% /q 'ATTORNEYS Sept. 11, 1923. Y 1,467,501

w. F. RoNEY A TURNING TOOL Filed March 7. 1922 2 Sheets-Sheel'l 2 MHH" www 41 A TTOH/VEYS Patented Sept. 11, 1923.

UiTED STATES WILLIAM FRANKLIN RONEY, OF DENVER, COLORADO.

TURNING Toon Application filed March 7, 1822.

To all whom t may concern:

Be it known that I, VILLIAM FRANKLIN Romer, a citizen of the United States, and a resident of Denver, in the county of Deliver and State of Colorado, have invented certain new and useful Improvements in Turning Tools, of which the following is a specification.

This invention relates to an improvement in turning tools especially adapted for use with crank shafts and the like.

The object of the invention is to provide a turning tool of this characterwhich is adjustable so as to be readily adapted for use with work on bearings of various sizes and which is so constructed and organized as to accurately turn or true the bearing to its circular cross section irrespective of the adj ustment of the turning tool.

Another object is to provide a turning tool of this character which may be readily applied to and removed from the work and which may be conveniently used on a lathe, bench or in the crank case.

Other objects and advantages of the invention reside in certain novel features of construction, combination and arrangement of arts which will be hereinafter more fully described and particularly pointed out in the appended claims, reference being had to the accompanying drawings forming part of this specification, and in which:

Figure 1 is view in side elevation, showing the preferred embodiments of the invention, parts being broken away Aand shown in section and in elevation for the sake of illustration;

Figure 2 is a plan view of the invention;

Figure 3 is a front elevational view thereof;

Figure 4 is a view in transverse section on line 1 -1 of Figure 1;

Figure 5 is a detail perspective view of one of the stationary carrier shoes or blocks;

Figure 6 is a detail perspective view of the cutter.

Figure 7 is a detail view in transverse section illustrating the detail construction of one of the centering` shoes or blocks.

Referring to the drawings wherein for the sake of illustration is shown the preferred embodiment `of ythe invention, it will be seen that the improved turning tcol comprises ay pair of companion parts, designated at 10 and 11, these companion parts together constituting the body portion seriai No. 541,741.

Of the tool. The companion part-s 10. and

11 are each provided with arcuate shoulders i designated at 12 and 13, respectively. The arcuate shoulder 12 terminates at its ends 'in vertical walls designated at 12a, and vbblow these vertical walls laterally extending A bifurcated lugs 14 are provided, the lugs being preferably integrally formed with the body portion. The lugs 14 are arranged in confronting relation with respect to channels l'provided in the opposed portions Oi flat side faces and a threaded stem 1,8

integral with the shank. The rectangular Shanks 17 o-f the eye-bolt 16 are pivotally" connected atfone end by meansof pivot pins 19 to the portions of the shoulder 13 which define `the channels 15,. The faceso-f these portionsfof the shoulder k13 which define the channelsI l5 are' plane and v flat and lie parallel, and these faces coact with the fiat faces of the rectangular shank to constrain it to vertical swinging motion.

portionof the rectangular shank 17 is also y 1 received in `the space between the bifurcated lugs 14. Adjusting nutsl 20 [are threaded on the stems 18 and engage rectangular washers 21 interposed between the nutsand the adjacent faces of the bifurcated lugs 14. 4.

The part 10carries a cylindrical guide rod 2 5 at one side and has formed atthe opposite side a guide socket 2 6..` Similarly the part 11 has a guide rod 27 formed at one side and a guidesocket 28 formed at the opposite side. The guide rod 25 coacts with the guide socket 28 of the part A1,1' and the` guide socket26 of the part 1.0 coacts with the guide socket 27 of the part v 11. lThe parts 10 and l1 are provided with cavities 2 5a and 27?L "about the guide rods 2 5 and 27, respectively, and the guide sockets 26 and 28 are formed by boring or otherwise machining an opening in. the body proper of the parts 10 and 11 and also by providing tubular flanges 26?*Y and 28a respectively, the

bores of Ithe tubular. flanges 26a' and 28a.

being alined with the openings or Abore formed in the bodies .of the companion parts. As clearly shown in Figure 1 the guide rods 25 and 27 slidably fit in the guide i sockets 28 and 26 respectively and the tubular flanges 26a. and 28a slidabfly fit in the cavities 25a and 27a', respectively. These parts are machined or and Vpolished l,

Cal

ends of the block.

to a. sung working or sliding fit and function to accurately constrain the parts l0 and 11 to partake of proper movements toward and away from each other.

Carrier shoes or blocks 30 are associated with the part 10 and preferably two such carrier shoes or blocks are provided. The carrier blocks 30 have dove tailed engagementfwith the part 10, the part l0 being provided with grooves receiving these blocks, and the side walls of the grooves being undercut and engaging undercut side edges of the blocks: 30 to bring about the dove-tail engagement. Intermediate its ends each carrier block is provided with a cutaway portion or clearance 3l and at its ends bearing surfaces 32 are formed, thesebearing surfaces 32 being plane and dat and being adapted to directly engage and contact with the work. The central portionof the carrier block is provided with a countersunk opening' 33 with which a screw 34 ceac-ts to secure the carrier block in positionof the part 10. As vclearly shown in 'Figure l, these blocks 30 are spaced angiil'arly from each other and the pla-nes in which the bearing surface 32 are disposed intersect each other at approximately a 90 angle. It is the primary function of these blocks to support and carry the tool during the rotation of the work` the bearing surfaces 3'2 engaginfg the work for this purpose. The clearance3l is provided in order that the oil grooves and other irregularities encountered in crank shaft bearings and the like may be accommodated without` inipairing the accuracy or othewise iinparing or altering the action of the tool.

A pair of centering blocks, designated generally at 35 are carried by the part 11 of the tool and preferably these centering blocks are arranged diametrically opposite the carrier blocks. These centering blocks have dove-tail or undercut engagement with the part 11 and are also :secured in position by means of the screwy operating through a countersunk opening 37 provided in the center of the block. the block being cutaway centrally, as at 38, to provide a clearance .as inthe instance of the carrier block. The

centering blocks 35 are also provided with centering devices which arefarranged at the Preferably these centering devices comprise balls 39 operating in socketsl 40 provided therefor at the ends of the block. The sockets permitthe balls to project therefrom a substantial distance and .springs are tensionedfby ymeans of threaded plugs 42, the plugshavingslots 42EL in their outer ends in order that they may be readily manipulated by suitable tools, such as a screw-driver or the like. As before stated the centering devices are provided at the ends of the block and these ends are also provided with bearing surfaces 43 (see Figure 4) which are adapted to engage the work when it is of true circular cross section and when it is not necessary for the balls 39 of the centering devices to project from their sockets and engage the work in order to properly center the tool thereon.

A. cutter 50 is provided and preferably is arrange-d upon the part ll, the cutter being adjustably mounted in the cut-ter slot 51 provided therefor in this part. As shown in Figure l the cut-ter is arranged intermediate the centering blocks Adjusting mechanism is provided for the cutter and preferably comprises a pair of adjusting screws (see Figure 4) having threaded engagement with the part 11 and having their ends engaging aud controlling the cutter. A tapered key 53 is adapted to be driven into an opening 24 of corresponding formation, and this tapered key 53 is provided with a dat face 53a engageable with the adjacent face of the cutter, it heilig understood that the opening 54 intersects the cutter slot 5l so that the fiat face of the key 53 directly engages the adjacent face of the cutter 50. ln this manner the cutter is locked in position and displacement thereof is prevented.

' Operating handles 55 are provided. Preferably there are four such handles. two being carried by the part l0 and two being carried by thepart l1, the operating handles extending laterally or radially from the tool. The handles may be connected in any desired manner to the tool. but preferably have their inner ends threaded and engaged in` the threaded openings provided in the parts l0 and 11.

In use. the parts l0 and 1l are separately associated with a crank pinion Yor bearing, the adjusting nuts 2O having been previously loosened' and the eye-bolts having been swung away so as to disengage the adjusting nuts vwith respect to the legs 14 in order to separate these parts. lWhen the separate parts are associated with the work they are brought into alinement and the guide rods are entered into the guide sockets and the parts are then urged toward each other until the desired adjustment is had. At this time the eye-bolts are swung unt-il their shanks are received in the bifurcations of the lugs 14 and the adjusting nuts 20 are then turned to secure the parts in adjusted position. If

the work is of true circular cross section. r

the bearing surface 32 of the carrier shoes 30 and the bearing surface 43 of the centering shoes 35 .directly engage the work and the balls 39 of the centering devices engage the work as shown in Figure i hutthese balls do .1

not project from their sockets but are displaced therein against the tension of the coil springs 41. The cutter is then adjusted until it is brought into the desired engagement with the work and it is lockedin this position b v the key 53 in the manner describe-d. W hen the operating handles 55 are grasped and the tool is turned the cutter 50 revolves circumferentially around and in engagement with the work and shapes it to the desired cross section. The balls 39 of the centering devices at all times engage the work and tend to properly center the tool thereon` and as these balls are diametrically opposite the bearing surfaces 32 of the carrier blocks 3() they bring these bearing surfaces into action at all times sothat the tool rides or is carried smoothly around the work. This is true irrespective of the cross section or irregular manner in which the bearing has been worn as the balls 39 have ample capacity to move to compensate for any such irregularities or cross section. By adjusting the nuts 2O on the eye-bolts 16. the tool may be adapted forl bearings of various sizes and in any or all such adjustments the guide rods 25 and guide sockets Q8 together with the tubular flanges and guide cavities secure alinement and proper disposition of the parts.

I claim:

l. In a turning tool of the character described, a pair of companion parts, one of said parts having an arcuate shoulder provided with channels at its ends, bifurcated lugs carried by the other of said parts and alined with the channels of said shoulders. eyebolts having squared shanks pivotally connected to the arcuate shoulder, the square shank operating in the channels and being adapted to be received in the bifurcations of said lugs, -said eye-bolts also having threaded stems projecting from said Shanks, adjusting nuts operatively engaged with the threaded stems of said eyebolts, rectangular washers interposed between said adjusting nuts and said lugs, cooperating guide means between said companion parts for constraining them from proper movement toward and away from each other, a pair of carrier blocks carried upon one of said companion parts, a pair or" centering blocks carried by the other of said companion parts and a cut-ter intermediate said centering blocks.

2. In a turning tool of the character described, a pair of companion parts, one of said parts having an arcuate shoulder provided with channels at its ends, bifurcated lugs carried by the other of said parts and alined with the channels of said shoulders, eye-bolts having squared shanks pivotally connected to the arcuate shoulder, the square shank operating in the channels and being adapted t0 be received in the bifurcations of said lugs, said eye-bolts also having threaded stems projecting from said Shanks,

adjusting nuts operatively engaged with the threaded stems oi said eye-bolts, rectangular washers interposed between said adjusting nuts and said lugs, cooperating guide means between said companion parts for constraining them from proper movement toward and away from each other', and cutting mechanism carried by one of said parts.

3. In a turning tool of the character described, a pair of companion parts, cooperating guide means between said parts for constraining the same to'proper movement toward and away from each other, said guide means including a guide rod and a guide socket carried by each of said companion parts, the guide rod of one part slidably fitting in the guide socket of the other part, each of' said parts being provided with a cavity around its guide rod and having` a tubular flange defining a portion of its guide socket, the tubular fia-nge slidably fitting in the cavity 0f the opposed part, means for securing the parts in Aadjusted position a pair of carrier shoes arranged upon one of said parts, a pair of' centering shoes arranged upon the other of said parts, and a cutter arranged between said centering shoes and adjustably secured to the adjacent part of said tool.

t.. ln a turning tool of the character described, a pair of companion parts, a pair of carrier shoes secured to one of said parts and each having bearing surfaces and a clearance intermediate said bearing surfaces, a pair of centering shoes secured to the other of said parts and diametrically opposite the carrier shoes, each of said centering shoes having a pair of bearing surfaces and a clearance intermediate said bearing surfaces, a pair of centering devices cooperating with each of said centering shoes, and each including a ball, said shoes having a socket formed therein in which the ball operates and from which it projects, the ball being arranged to project beyond the bearing surface, a spring `for projecting said ball, means for tensioning said spring, and a cutter arranged between the centering shoes and adjustably secured to the adjacent parts.

5. In a device of the character described, a pair of companion parts, a pair of carrier shoes mounted on one of said parts, and a pair of centering shoes carried by the other of' said parts, said centering shoes having work engaging means spring pressed into engagement with the work.

6, In a device of the character described, a pair of companion parts, a pair of carrier shoes secured upon one of said parts and each having` a bearing surface and a clearance intermediate said bearing surfaces and a pair of centering` shoes secured t0- the other of said parts, each of said centering Shoes having a pair of bearing surfaces and a clearance in said bearing surfaces, e pair of cen tering devices for said centering;` shoes, and each including a bell, said slices having` sockets therein in which said balls operato and from which said balls projects, the balls being arranged to project beyond the bearing surfaces and spring ineens for projecting said bells.

` 7. In a turning tool. of tlie character described, a, pair of companion parts, coop'- erating guide means between seid parts for constraining the saine to proper movement towel-diend away from each other, said guide means including a guide rod and a guide socket carried by each of said compranion parts7 the guide rod of one part slidably fitting in the guide socket of the other part, each of said parts being provided with e cavity around its guide rod and having e tubular flange defining a. portion of its guide socket, the tubular flange slidably fitting in the cavity of the opposed part, and ineens for Securing the parts in adjusted position.

VILLIAM FRANKLIN HONEY. 

